rooting xperia minipro after 2.1 update

hi.im new to android phones.ive tried using z4root on my mini pro after i updated to 2.1,but when i clicked on 'temporary root',it got to message saying 'opening exploit' and just kept trying to load for half an hour until i turned phone off.
do u need to use 'perminent root' instead,or is the update stopping it?

thanks for any help or ideas-i only want to remove the damn apps that are built into the phone as ill never use half of them.is this usual with android phones?

In my experience one click rooting isn't the most reliable. I also attempted to use z4root on my x10 mini pro (U20i). It installed ok and when i tried both temporary and permanent root it claimed it was succesful. However i still had no rooting priviliges.

The best way forward i have found is to download superoneclick from here;

please do let me know, i have xperia sony ericsson mobile, and it got pattern locked due to wrongly attempted by child, now it is asking favourite place which i donot know, what are the other options, please advice......